What is difference between slip rings and carbon burushes?

2 Answers   Hyundai, IVRCL,

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What will be the total current for 300kva UPS if it runs on 40 to 45 percent load. Is there any formula for to calculate the exact load.

4 Answers   Sodexo,

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why tan delta test conducted in electrical equipmenr

4 Answers  

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following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

0 Answers  

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what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.

0 Answers  

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why can tv operate at low voltage??

2 Answers  

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All tape of electrical questions Answers tape of motor transformer e.o.t crane

0 Answers   Afcons, Honeywell, Manlift, SIMS,

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What is the difference between AC and DC injection methods for rotor earth fault protection

0 Answers   Asian Alliance Insurance, NBVL,

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What is the function of semicon in 33kv ht cable ?

4 Answers   Denson, Finolex,

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what is the meaning write of AC1,AC2,AC3 .....power contactor

7 Answers   ABB,

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how to ctrl motor by use of ac or dc drive.plz explain evdintly

0 Answers  

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it

2 Answers  

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